Any chance anyone has a full inventory of Zincs to replace on a 1999 2800 SCR with a single 7.4L with Bravo 3? The previous owners of the boat, we're finding, weren't big on maintenance, so I'm trying to get a full list of items together to just change out and start recordkeeping on.

The Bravo III zincs come in a kit from Martyr. Make sure you order to correct kit. One kit is for 1989 -2003. The other kit is for 2004 and newer. The 2004 BIII takes 2 zinc's underneath the anti-ventilation plate. The older style only uses one.

The newer kit also comes with a prop zinc. I would buy the prop zinc separately if the kit doesn't come with one. You'll need to determine whether an Aluminum or Zinc kit best meets your needs.

If we keep the boat on Lake washington (Freshwater) but frequently take it out for weekends in the sound (salt water), should we go with Aluminum or Magnesium, since it will spend 95% of its time sitting in fresh water?

Looking up parts, looks like I can get the B3 kit and a separate prop anode from boatzincs.com (and elsewhere). I'll have to figure out what the right size anodes are for my trim tabs, but lastly, what about on the engine? On our big cummins motors there's a pile of zincs all over the cooling system. I assume there's something similar on the 7.4L with freshwater cooling subsystem.